Lecture 7 - NTG and Secondary OAG Flashcards Preview

Glaucoma > Lecture 7 - NTG and Secondary OAG > Flashcards

Flashcards in Lecture 7 - NTG and Secondary OAG Deck (43)
Loading flashcards...
1

Authorities have suggested that local _________ factors play an important role in NTG

Vascular

2

What four features are there a higher prevalance in NTG?

Acrynomn: CARI

Coagulopathies
Autoimmune Disorder
Raynaud Phenomena
Ischemic vascular disease

3

True or False. NTG progression will always be decreased when lowering IOP?

False. There are instances where progression will occur.

4

IOP findings for OD: 22mmHg and OS: 26mmHg. Which eye will be effected the most or will they be effected equally

OS will. The eye with the higher IOP will be more effected.

5

When the CNTGS study was conducted, reduction of IOP by ___% reduced the rate from 35% to ___% confirming a clear role of IOP

30% and 12% for the latter

6

VF loss progression of NTG tends to be ____

slow

7

A pt diagnosed with NTG will find their visual field loss to be in which region the most?

Closer to fixation

VF are usually focal, deeper and central

8

What is the most common type of VF loss, Arcuate or Paracentral scotoma?

Paracentral Scotoma

9

What are the two region of the rim that will show thinning the most with a pt with NTG? There are two answers.

Inferiorly and Inferiotemporally

10

What are the 2 types of Optic disc appearance of NTG?

1. Senile sclerotic group
-Shallow
-Saucer like sloping of NRR

2. Focal ischemic
-Deep focal polar notching in the neuroretinal rim

11

What are the 5 glaucomatous disc classifications?

1. Focal
2. Myopic
3. Senile Sclerotic
4. Concentric cup enlargement
5. Advanced

12

What are 2 benefits of using Diurnal IOP?

1. Determine IOP peak
2. Establishing target IOP

13

Calcium deposits go into the vitreous and as the calcium is being pushed out, it crushses the NFL. Is this considered glaucomatous?

No.

Dr. Davey used this analogy. Slide 17 from lecture 7

14

What are 2 methods used for diagnostic evaluation for NTG?

1. Repeated IOP measurements at various intervals

2. Gonio - rule out angle closure, recession or evidence or previous ocular inflammation

15

What are 3 rare atypical cases where structure and function don't relate?

1. Auscultation and palpatation of the carotid arteries
2. Focus on blood flow
3. Post chiasmal investigation using CT and MRI

16

What are the 4 types of criteria for Pigment dispersion syndrome?

1. Pigment deposits on the endothelium
2. Pigments on the TM
3. Lens periphery
4. Midperipheral transillumination defects

17

What are 4 clinical appearances in Secondary OAG?

1. Midperipheral iris is concave bowing towards the zonular fibers
2. Pigment deposits can be seen on zonules
3. Does not universally develop glaucoma
4. Common in white males with myopia between 20 to 50

18

After ______ pigment maybe release into the AH.

excercise

19

What are the 3 types of open angle lens induced glaucoma?

1. Phacolytic - leakage of lens protein through capsule of a hypermature lens (rare)
2. Lens particles
3. Phacoanaphylaxis

20

What type of cells in the body can cause plugging of the TM?

Macrophages

21

In lens induced glaucoma, you may see flare without KP's. What are 2 hallmarks you may see associated with them?

Mutton fat KP and Fine particle (granulomatous)

22

After how long can lens particle glaucoma ocur when cataract extraction has occurred?

Within weeks.

Note: Extraction may occur months or year later

23

What type of edema can occur with lens particle glaucoma?

Microcystic corneal

24

What type of synechiae may develop over time when lens article glaucoma has occurred?

Posterior synechiae

25

What is Phacoanaphylaxis?

1. Pt becomes sensitized to their own lens protein following cataract extraction or penetratin trauma
2. Granulomatous inflmmation
3. KP present
4. Moderate anterior chamber reaction
5. Rare

26

What are 3 features that may occur during phacoanaphylaxis?

1. Low grade vitritis
2. Syncheial formation
3. Residual lens material in anterior chamber

27

What high risk health problem leads to neovascularization of the angle?

Diabetes

Note: Fibrous particles may occur during neo of the angle

28

What type of melonomas and tumors may cause secondary closure glaucoma?

1. Choroidal melanomas
2. Retinal Tumors
3. Choroidal Tumors

29

What is a common sign in Ocular inflammation and Secondary OAG?

Elevated episcleral venous pressure

30

What are the sign of Elevated episcleral venous pressure?

1. Chronic red eye
2. History of head trauma (carotid cavernous fistula or dural fistula)
3. Dilated episcleral veins
4. Unilateral or Bilateral
5. Blood in the Schlemm's canal